Brand: Casio G-Shock
Model: GA-2100-1A1
Nickname: CasiOak
Gender: Men's
Case Size: 48.5 × 45.4 × 11.8 mm
Weight: 51g
Case / Bezel Material: Carbon / Resin
Band Material: Resin
Construction: Shock Resistant + Carbon Core Guard Structure
Crystal: Mineral Glass
Battery Life: Approx. 3 years (SR726W × 2)
World Time: 31 time zones (48 cities + UTC), DST on/off
Display: Ana-Digi with hand shift feature
Stopwatch: 1/100-sec (first 60 min), 1-sec (after 60 min), elapsed/split/1st-2nd place
Countdown Timer: 1 sec to 24 hours
Alarms: 5 daily alarms + Hourly time signal
Backlight: Double Super Illuminator LED (White) for face & display, 1.5/3-sec selectable + afterglow
Calendar: Full auto-calendar (to 2099)
Time Format: 12/24-hour
Accuracy: ±15 seconds/month
Water Resistance: 200 Meters
Warranty: 1 Year